Neutralisation – Classification of Salts
Post

Neutralisation – Classification of Salts

Neutralisation Reaction When solutions of acids and bases are mixed, reactions occur in which the acidic and basic properties of the reactants are nullified. Such acid-base reactions are known as neutralisation reactions. The Reactions of Acids The reactions of acids with metal hydroxides, metal oxides, carbonates and hydrogen carbonates can all be considered acid-base reactions...

Gravimetric Determination of Sulfate Content
Post

Gravimetric Determination of Sulfate Content

First-Hand Investigation – Determination of the Sulfate Content (Gravimetric Determination) of a Lawn Fertiliser The sulfate content of ammonia fertiliser can be determined gravimetrically by converting the sulfate in a weighed sample of fertiliser to barium sulfate. The highly insoluble barium sulfate is collected, dried and weighed of Gravimetric Determination. Dissolve 1.00 g of fertiliser...

Particle Theory of Matter
Post

Particle Theory of Matter

Particle Theory of Matter Matter Particles All matter is composed of tiny particles. These particles interact with one another through collisions and vibrations. These particles can be elements, molecules or compounds. In different states the particles of the substance interact differently. Particle Nature of Gases The kinetic theory of gases is used to predict the...

Separating Mixtures | Chemical Earth
Post

Separating Mixtures | Chemical Earth

Need for Separating Mixtures Often substances we require from the natural world need to be separated from impurities, which is separating mixtures. This can be done through a number of techniques. The techniques presented are based on physical properties and can’t be used to separate compounds into elements. Separating Solids of Different Size Two common...

pH Acidity Acidic Environment
Post

pH Acidity Acidic Environment

pH Acidity Describing the acidity of a solution using concentrations with negative powers can be cumbersome, so a more convenient approach is to use pH acidity to describe acidity levels. The pH (potential hydrogen) scale is a logarithmic scale that indicates the concentration of hydrogen ions in a solution. The higher the concentration of hydrogen...

Acids Bases Neutral Substances
Post

Acids Bases Neutral Substances

Acid An acid can be defined as a proton donor and has sour taste. Many acids naturally occur and have known for hundred years. Some foods contain acids, such as vinegar (ethanoic acid), citric acid (2-hydroxypropane-1,2,3-tricarboxylic acid) and ascorbic acid (vitamin C). Hydrochloric acid (HCl) occurs in the stomach to provide an acidic environment for...